Window operator



June 16, 1959 Filed Jan. 3, 1956 B. M` HALDEMAN Y WINDOW OPERATOR 4 Sheets-Sheet 1 June 16, 1959 B. M. HALDEMAN 2,890,882

WINDOW OPERATOR Filed Jan. 3, 1956 4 Sheets-Sheet 2 INVENTOR PBruceJW. Haolemacr,

www @j ATTORN B. M` HALDEMAN June 1s, 1959 WINDOW OPERATOR 4 Sheets-Sheet 3 Filed Jan. 3, 1956 INVENTOR fBrame M Hacoemm 'BY fl Y wmf f f AT1-ORNE Jun 16, 1959 B. M. HALDEMAN 2,890,882

` wINDow OPERATOR Filed Jan. 3, 1956 4 Sheets-SheetA INVENTOR Bruce M. Haceman/ ATTOR 5 United States Patent WINDOW OPERATGR Bruce M. Haldeman, West Hempstead, N .Y., assignor to General Bronze Corporation, Garden City, NJ.

Application January 3, 1956, Serial No. 556,938

4 Claims. (Cl. 26S- 110) This invention relates to a window and Window operator.

In awning type windows where several sashes are arranged in vertical series and are mounted to swing on horizontal pivots, the sashes are opened and closed through the agency of vertically movable slides mounted within the jambs of the window frame. These slides are ofttimes actuated by window operators which are connected to the slides and include rotatable handles.

It has been found that the operators will ofttimes be injured and distorted by attempts to force the sashes beyond their open and closed positions. This is due to the fact that the operative who opens or closes the sashes, through the medium of the rotatable operating handle, at times applies force to the handle in excess of that necessary to open or close the sashes.

It is, therefore, an object of this invention to provide a window operator which is so constructed and interconnected with the sashes that they may be moved into their ultimate open and closed positions and wherein provision is made to protect the operator against injury or distortion, irrespective of the attempt of the operative to apply excessive force to the operating mechanism through the rotatable operator handle.

It is a further object of the invention to so construct the operating mechanism that adjustment may be effectuated during initial installation to the end that the slides will thereafter, without further adjustment, move in synchronism to move both sides of the sashes to the same extent in the sash opening and closing operations.

With these and other objects in View which will appear as the description herein proceeds, the invention comprises the combination and arrangement of elements described in the specication, illustrated in the drawings and recited in the claims; but it is to be understood that the specic embodiments illustrated in the drawings and described in the specification are only for the purpose of illustrating one form of the invention, and I do not wish to be limited to that form except insofar as it is made necessary by the claims.

In the drawings, t

Figure l is a face view of a window constructed in accordance with the herein invention;

Figure 2 is a vertical sectional view taken on line 2-2 of Figure l;

Figure 3 is a vertical sectional view taken on line 3--3 of Figure l;

Figure 4 is a fragmentary sectional View taken on line 4`4 of Figure 3;

j. Figure 5 is a fragmentary horizontal sectional View taken on line 5-5 of Figure 4;

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Figure 6 is a fragmentary sectional view taken on line 6--6 of Figure 4;

Figure 7 is a horizontal fragmentary sectional View taken on line 7 7 of Figure 6;

Figure 8 is a fragmentary vertical sectional view taken on line 8-8 of Figure 7;

Figure 9 is a vertical fragmentary sectional view taken on line 9 9 of Figure 8;

Figure l0 is an exploded View showing the correlated operating discs and stops;

Figure 11` is an enlarged fragmentary horizontal view showing the interengagement of the worm and the spur gear teeth; and

Figure l2 is an enlarged fragmentary vertical View showing the interengagement of the worm and the spur gear teeth. t

Describing now the construction of the embodiment illustrated in the drawings, the window frame includes jambs l and 3 having chambers 5 and 7 therein, a sill 9 havinga chamber 11 therein and a header 13 having a chamber 15 therein.

A slide 17 which is vertically movable upwardly and downwardly is mounted for such movements in each of the chambers 5 and 7 in the jambs.

A sash 19 or a plurality of sashes such as 19 and 21 extend between the vertical slides 17 and are pivoted adjacent their upper edges, as at 23, on both of said slides. A link Z5 is pivotally attached at 27 to each of these sashes, and the other end of each link is pivoted at 29 to the adjacent vertical jamb, one of these links being located on each side of each sash.

As the slides are moved upwardly, the links 25 and the slides cause the sashes to move on their horizontal pivots 23 into closed positions, and as the slides 17 move downwardly, the links 25 and the slides cause the sashes to move on their horizontal pivots to open positions.

Mounted on the window frame are compressible and resilient weather stripping members 31, and mounted on the upper rails of the sashes are resilient and compressible weather stripping members 32 which are contacted by the rails of the sashes when the latter are closed, thus sealing the sashes against the entrance of weather. The proper compression of these weather stripping members will insure a tight seal, and so it is advisable, after the sashes have been substantially closed, that they be moved slightly to effectuate this compression of the weather stripping.

In order that the sashes may be moved to their open and closed positions and that suliicient force may be applied to the sashes to compress the weather stripping, the following operating mechanism has been provided.

A shaft 33 extending horizontally in the sill chamber 11 is provided with suitable bearing members 35 adjacent its ends, the shaft, however, extending beyond these bearing members. These bearing members 35 are located within the chambers 5 and 7 of the jambs and are secured to the window frame as by screws 36. To each extended end of the shaft a pulley 37 is secured, which pulley is provided in its periphery with notches 38 for a purpose which will later appear.

Located above each of these pulleys 37 is an idlerv member 41 is trained over each of pulleys 37 and .i l 3 t 39 and terminates at one of its ends adjacent the lower end of the adjacent slide to which it is secured at 43 through the medium of a plate 45.

The other end of each member 41 is secured at 47 to a plate 49 mounted on the adjacent slide 17. This plate 49 is mounted to move on guides 51 carried by the slide 17 and is adjustable vertically upwardly and downwardly by means of an adjusting screw 53 which is mounted on the adjacent slide 17 and 55y and connects with a flange 57 on the plate 49. The member 41, which may be in the form of an inelastic cable or tape, is provided at spaced points with buttons 59 which are rigidly secured to the member 41 as, for instance, by swaging. The distance between these buttons is equal tothe circumferential distance between the notches 38 in the pulleys 37.

Thus, when the shaft 33 is rotated in one direction, the slides 17 will be moved upwardly throughthe medium of the pulleys 37 and 39 and the members 41, and when the shaft is rotated in the opposite direction, the slide 17 will be moved downwardly through the same medium.

In order that this shaft may be rotated, selectively in either direction, and so that the sashes may be opened and closed and the weather stripping compressed without placing undue strain on the operating mechanism, the following mechanism is provided. On one end of the shaft 33 a conventional spur gear 61 is mounted within a housing 63 which is rigid with the cap of the adjacent bearing'member 35. This -gear is capable of adjustment longitudinally on the shaft but is incapable of rotative movement in relation thereto. A worm `65, which may be of conventional form and which has its bearings at 67 and 69 in the housing 63, is interengaged with the teethvof the spur gear 61. The pitch angle and center distance of the spur gear and the worm is such that a portion of the worm engages a tooth of the spur gear 61 at a single point of contact only. This arrangement of the spur gear 61 and the helical worm 65 makes is possible to use a conventional form of spur gear rather than a helical gear or worm gear, with the result that a far simpler and cheaper and yet eicient actuator for the shaft 33 is provided.

An operating handle 71 is secured at 73 to the end of the worm shaft 75 so that the operative may, through the medium of the handle, the worm and the spur gear, rotate the shaft 33 in both directions. This rotation of the shaft 33 will rotate the adjacent pulley 37 to actuate the adjacent slide 1'7 lby the medium of member 41, and at the same time will rotate the pulley 37 at the opposite endV of the shaft, thus moving the sashes about their horizonal pivots.

In order that the operating handle 71 may pass through several complete revolutions in opening and closing the sashes, and in order that no undue pressure may be applied to the sashes or operating mechanism, the following mechanism is provided: A disc 77 is` keyed to thel shaft 33 and is located in the chamber 5 of one of the4 jambs'. This disc 77 is provided with an abutment 79 which is located at its periphery and extends laterally from oneof its faces toward a second disc 81 which is freely rotatable upon the shaft 33. This disc 81 is provided with two abutments 83 and 85 which extend from its opposite faces. Complemental abutments 87 and 89 project from the face of the bearing member 35.

When the shaft 33 is rotated, it will carry the disc 77 with it substantially 360, at which time the abutment 79 yon the disc 77 will engage the abutment 83 on the disc 81 and', thel disc 81 being free to rotate on the shaft 33, further rotation of the shaft will carry the disc 81 with it until the abutment 8S engages one of the abutments 87 or 89, as the case may be, upon the bearing memberpSS. At this time further rotation of the shaft will be prevented regardless of the force that is applied to the handle 71 by the operative.

The disc 775 is' so located on the shaft through the medium of a projection 91 and a slot 93, and the abutf ments 79, 83, 85", 87 and 89 are so correlated that the rotation of the shaft will be arrested when the sashes have reached their open positions and also when the sashes have reached their closed and weather stripping compressing positions. Thus, regardless of the actions of the operative, no undue strain which would tend to injure or distort the sashes or operating mechanism can be transmitted to the operating mechanism or to the sashes.

What I claim is:

l. The combination with a Window comprising a frame having jambs, sill and header, of slides mounted in said jambs for vertical movements, a sash Ipivoted on horizontal pivots adjacent its upper edge and its side edges on said slides, links pivoted on said jambs and on said sash between its upper and lower edges, means for moving said sash about its pivots to open and closed positions comprising a rotatable horizontal shaft extending longitudinally in said sill, bearing members for said shaft secured to said jambs, a pulley mounted on each end of said shaft for rotation therewith, an idler pulley carried by each said jamb adjacent its upper end, a ilexible and substantially inelastic slide operating member trained over said pulleys in each said jamb and having its ends connected to the adjacent slide, and means for rotating said shaft in both directions comprising a spur gear mounted i in one of said bearing members and rotatable with said shaft, an actuator for said gear comprising a worm mounted in said last mentioned bearing member and whose axis is at an acute angle to the axis of said spur gear and which engages a single tooth of said spur geary at a single point only at any given time, a first disc having an abutment on one face thereof mounted on and rotatable with said Shaft,.a second disc having abutments on opposite faces thereof mounted on and rotatable independently of said shaft, a pair of abutments rigid with said frame, the abutment on the first disc being engageable more than one revolution and its rotation will be arrested at predetermined points in its rotation in both directions.

2. The combination with a window comprising a frame having jambs, sill and header, of slides mounted in said jambs for vertical movements, a sash pivoted on horizontal pivots adjacent its upper edge and its side edges on said slides, links pivoted on said jambs and on` saidf sash between its upper and lower edges, means for moving said sash about its pivots to open and closed positions comprising a rotatable horizontal shaft extending longi tudinally in said sill, bearing members for said shaft secured to said jambs, a pulley mounted on each end of said shaft for rotation therewith, an idler pulley kcarried by each said jamb adjacent its upper end, a flexible and substantially inelastic slide operating member trained over said pulleys in each said jamb and having its ends connected to the adjacent slide, and means for rotating. said shaft in both directions comprising a spur gear secured to said shaft, a rotatably mounted worm engaging a single tooth of said gear at a single point only on said tooth at any given time and an operating handle rigid with said worm.

3. The combination of elements recited in claim 2 wherein the axis of the worm is disposed at an acute angle in relation to the axis of the spur gear.

4. The combination with a window comprising a frame having jambs, sill and header, of slides mounted in said jambs for vertical movements, a sash pivoted on horizontal pivots adjacent its upper edge and its side edges on said slides, links pivoted on said jambs and on said Asash between its upper and -lower edges, means for moving said sash about its pivots to open and closed positions comprising a rotatable horizontal shaft extending longitudinally of said sill, bearing` members for the of said shaft mounted within and secured to`said' jambs,

means connecting said shaft and said slides to move said slides vertically upon rotation of said shaft, a spur gear rigidly mounted on said shaft and located in one of said bearing members, and a Worm mounted in said last mentioned bearing member and having single point contact with a single tooth of said spur gear at any given time.

References Cited in the le of this patent UNITED STATES PATENTS Sellers et al. June 28, 1881 Cerny Jan. 14, 1941 Peremi et al. Apr. 6, 1943 McMurray Nov. 11, 1952 Baird et al. Apr. 13, 1954 FOREIGN PATENTS France Feb. 8, 1950 

